Google Android 10 must allow only the administrator (MDM) to install/remove DoD root and intermediate PKI certificates.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-98967	GOOG-10-009100	SV-108071r1_rule		Medium

Description
DoD root and intermediate PKI certificates are used to verify the authenticity of PKI certificates of users and web services. If the user is allowed to remove root and intermediate certificates, the user could allow an adversary to falsely sign a certificate in such a way that it could not be detected. Restricting the ability to remove DoD root and intermediate PKI certificates to the Administrator mitigates this risk. SFR ID: FMT_MOF_EXT.1.2 #47

Description

DoD root and intermediate PKI certificates are used to verify the authenticity of PKI certificates of users and web services. If the user is allowed to remove root and intermediate certificates, the user could allow an adversary to falsely sign a certificate in such a way that it could not be detected. Restricting the ability to remove DoD root and intermediate PKI certificates to the Administrator mitigates this risk. SFR ID: FMT_MOF_EXT.1.2 #47

STIG	Date
Google Android 10.x Security Technical Implementation Guide	2019-12-18

Details

Check Text ( C-97807r1_chk )
Review the device configuration to confirm that the user is unable to remove DoD root and intermediate PKI certificates. On the MDM console: 1. Open the User restrictions setting. 2. Verify that "Disallow config credentials" to on for the work profile. On the Google Android 10 device, do the following: 1. Open Settings. 2. Tap "Security". 3. Tap "Advanced". 4. Tap "Encryption & credentials". 5. Tap "Trusted credentials". 6. Verify that the user is unable to untrust or remove any work certificates. If on the Google Android 10 device the user is able to remove certificates, this is a finding.

Check Text ( C-97807r1_chk )

Review the device configuration to confirm that the user is unable to remove DoD root and intermediate PKI certificates.

On the MDM console:
1. Open the User restrictions setting.
2. Verify that "Disallow config credentials" to on for the work profile.

On the Google Android 10 device, do the following:
1. Open Settings.
2. Tap "Security".
3. Tap "Advanced".
4. Tap "Encryption & credentials".
5. Tap "Trusted credentials".
6. Verify that the user is unable to untrust or remove any work certificates.

If on the Google Android 10 device the user is able to remove certificates, this is a finding.

Fix Text (F-104643r1_fix)
Configure Google Android 10 to prevent a user from removing DoD root and intermediate PKI certificates. On the MDM console: 1. Open User restrictions. 2. Set "Disallow config credentials" to on for the work profile.